电磁波在双零折射率光子晶体中奇异传播性质的研究

项目名称： 电磁波在双零折射率光子晶体中奇异传播性质的研究

项目编号： No.11304215

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 杭志宏

作者单位： 苏州大学

项目金额： 25万元

中文摘要： 零折射率材料是最近超颖材料研究中的热点。利用零折射率材料可以构造新型光学器件，让电磁波沿任意路径传播，或任意改变电磁波波前形状。我们在2011年首次实现了有效介电常数和磁导率同时为零的双零折射率光子晶体，并展示了其具有弯波导，聚焦和一维隐身等新颖的功能。然而，这种新型材料仍有很多奇妙功能尚未实现，甚至未被探索过。本项目拟对双零折射率光子晶体系统开展进一步的研究，包括：1）研究缺陷态对双零折射率波导管中电磁波传播的影响；2）分析双零折射率光子晶体中电磁脉冲的传播特性；3）探讨准晶周期和非周期结构对双零折射率光子晶体电磁特性的影响等。我们希望通过理论分析，数值模拟和微波实验等多方面研究，深入探索并理解光在双零折射率光子晶体中的特殊传播性质，开发新型电磁波器件，并为将这一新领域推广到光学频段打下基础。

中文关键词： 光子晶体；零折射率材料；确定性界面态；超透明材料；

英文摘要： Recently, zero-index materials have become one of the hottest research topics in the field of metamaterials. New optical devices, such as arbitary shaped waveguide, arbitary wavefront engineering devices et. al., have been proposed based on zero-index material. In 2011, we designed and constructed the first double-zero-refractive-index photonic crystal, which exhibits simultaneous zero effective permittivity and permeability. Novel electromagnetic wave propagation properties, including arbitary waveguiding,focusing and cloaking in waveguide were demonstrated. However, many other intriguing and peculiar properties of this novel artificial material remain unexplored and unrealized. In this project, through theoretical analysis, numerical simulations and microwave experiments, we will carry out a series of studies on the double-zero-refractive-index photonic crystals. A new microwave waveguide with tunable transmission due to the defect state inside the waveguide will be developed. We will also understand the electromagnetic pulse propagation mechanism through this novel material. Further discussion will be conducted on how quasiperiodic or non-periodic structure will affect the electromagnetic properties of the double-zero-refractive-index photonic crystal. The physical mechanism behind the peculiar electromagneti

英文关键词： photonic crystal；zero-index materials；deterministic interface state；ultratransparent media；